From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 2 Nov 2001 18:26:44 -0200 (BRST) From: Rik van Riel Subject: Re: Zlatko's I/O slowdown status In-Reply-To: <87g07xdj6x.fsf@atlas.iskon.hr> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Zlatko Calusic Cc: Andrea Arcangeli , Jens Axboe , Marcelo Tosatti , linux-mm@kvack.org, lkml List-ID: On 2 Nov 2001, Zlatko Calusic wrote: > It was write caching. Somehow disk was running with write cache turned > off and I was getting abysmal write performance. Then I found hdparm > -W0 /proc/ide/hd* in /etc/init.d/umountfs which is ran during shutdown > > I would advise users of Debian unstable to comment that part, Why do you want Debian users to loose their data ? ;) The 'hdparm -W0' is useful in getting the drive to flush out the data to disk instead of having it linger around in the drive cache. regards, Rik -- DMCA, SSSCA, W3C? Who cares? http://thefreeworld.net/ http://www.surriel.com/ http://distro.conectiva.com/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/